Why do you think? For an example of something in support of my argument, China (and a number of other East Asian countries) use a very hardcore memorization + training routine. And they are having literally the best educational outcomes in the world from it, but such a thing would almost certainly fail catastrophically in a contemporary American classroom.
Are they having the best results from that? I've seen the claim of other countries using that and having book smart kids who can't think. (Whatever that means)
There is a common want to make the grass greener. However it isn't always and most people don't know.
> such a thing would almost certainly fail catastrophically in a contemporary American classroom.
It definitely would fail but isn't it an order of magnitude more likely that's due to the parents, teachers' unions, and other factors rather than American students are neurologically different than Chinese students and therefore learn differently?
If they do have much better outcomes (I have no idea if this is the case or not), if you made that change in kindergarten today and moved it up through the end of high school with that class, I bet you'd see remarkable improvement in them compared to older cohorts.